54 FUMIGATION METHODS 
and the tent is a little slack a few pieces of stone or 
chunks of wood may be required to hold it down. 
When the trees are uniform in size as many rows 
are taken as there are tents in use. The sheet tents 
are then transferred from tree to tree by simply revers- 
ing them over and over again. ‘The method varies 
from the foregoing only in the fact that the pulley 
rope is carried around the side opposite the lifter and 
fastened to the bottom of the tent covering the trees. 
The lifter is also set at a more acute angle. The can- 
vas tents with square tops, however, can not be re- 
versed in this manner. In such cases they are taken 
from the tree, lowered, and again hoisted in the usual 
manner. ‘The method of untenting a treein an Eastern 
orchard is shown in Fig. 25. On very large trees two 
lifters are usually necessary, and in this manner the 
weight of the tent can be kept almost entirely from 
the branches. 
California outfit.—In addition to the descriptions 
of the apparatus already given from California, Figs. 
26-29 will be of interest. These photographs were 
furnished by R. B. Cundiff, chairman of Riverside 
County Board of Horticultural Commissioners, and 
were taken for the United States Department of Agri- 
culture for the Year-Book of 1900. It will be seen 
by the figures that these tents are of enormous size 
and are handled by two lifters, one on each side of the 
tree, Figs. 26 and 30. The tent is pulled into position 
very much in the same manner as already described. 
After the tree is covered, asshown in Figs. 27 and 31, 
the canvas is folded around the base and the gas is 
generated. A novel feature of the outfit used in the 
